Self - Diagnostics on Paper-handling Devices 2000-sheet Input Tray Stand-alone Diagnostics The 2000-sheet Input Tray can run stand-alone diagnostic tests to test the device’s motors, functionality, and sensors. You will need one power cord, one #2 Phillips screwdriver, and a small flat-blade screwdriver for the DIP switches. 2000-sheet Input Tray Motor Test This test verifies that the three motors on the 2000-sheet Input Tray are functioning properly. 1 Identify the Back Cover (opposite from the tray door). Remove the four screws in the Back Cover. Remove the Back Cover (see “Back Cover” on page 167) 2 Pull open the paper tray, and open the Vertical Transfer Unit (VTU).
3 Set the DIP switches on the Controller PCA to Motor Test Mode. (See Table 7-15 on page 442 for an explanation of the DIP switch settings.) 4 To turn the Power Supply switch to Diagnostic Mode pull out on the blue handle. G If the motors are working properly, you will hear them as they rotate continuously. G If the motors do not rotate, replace the corresponding field- replaceable unit: either the Paper Pickup Assembly, the VTU, or the Paper Deck Drive Assembly. 5 To stop the test, set the power switch back to Operational Mode (push in), and reset the DIP switches on the Controller PCA to the off position (see Table 7-15 on page 442).
2000-sheet Input Tray Stand-alone Running Test This test verifies that the 2000-sheet Input Tray is functioning properly. For this test, use the LED located on the Controller PCA on the 2000-sheet Input Tray. (See Table 7-16 on page 443 for an interpretation of the LED patterns.) 440 Chapter 7 Troubleshooting C4085-91087